If you look through the tests in ``basis/db/tuples/tuples-tests.factor``
you can see some uses of foreign keys:

https://github.com/factor/factor/blob/master/basis/db/tuples/tuples-tests.factor

    annotation-schema-foreign-key
    annotation-schema-foreign-key-not-null
    annotation-schema-cascade
    annotation-schema-restrict

The annotation tuple has a foreign key to the paste table through
``paste-id`` with various use-cases tested.

I'm not sure if we have any good documentation for it (couldn't find in my
cursory glance), sorry about that.

Best,
John.





On Thu, Aug 18, 2016 at 8:48 AM, Georg Simon <[email protected]> wrote:

> Is there a database type for foreign keys ?
> Or how can I use foreign keys ?
>
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